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Wireless MF communication system.

Authors
Stolarczyk-LG
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0308004, 1980 Sep; :1-39
NIOSHTIC No.
20031946
Abstract
This report adds to the current body of underground communication system design knowledge by: 1. accurately defining (measuring) the 12 dB SINAD sensitivity of the system receivers and then starting the equivalent magnetic field strength (Hs) in uA/m; 2. showing that when a passageway repeater is used in loop to loop via the line communication link that the received signal level dependence on line current is only at the first power of distance; and, 3. maximizing the transmit moment is extremely important in the design of the transmit antenna network.
Keywords
Mining-industry; Mining-equipment; Underground-mining; Electromagnetic-energy; Electromagnetic-fields; Electromagnetic-interference; Electromagnetic-radiation; Statistical-analysis; Coal-mining; Metal-mining; Nonmetal-mining; Radio-waves
Publication Date
19800930
Document Type
Other
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Identifying No.
Contract-H0308004
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0308004
State
PA; NM; CO
Performing Organization
A. R. F. Products, Inc.
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